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  1. M

    BMS Balancing - Current Understanding

    There was a massive thread that contains a lot of arguing about range and capacity calculations which I don't want to resurrect here. I'm not linking for reference so it doesn't get thread-necro'd! It has been dead for a few years now... ;) The information below was from page 57 of that thread...
  2. M

    Refurbishing 2015 85kWh Pack - Confirm Parts

    I'm getting ready to reassemble my battery and want to refresh all of the bits as much as possible. I understand the 14 units of umbrella valves but what is an UMBRELLA VENT PLUG - FRONT? Does the list below look comprehensive or am I missing anything? The final column is the quantity Tesla's...
  3. M

    Pyro Fuse Question

    This is a little different than the other 100 threads on the topic. My 2014 p85d with an early 2015 pack is down being repaired - this is detailed in other threads. The pack has the original wire/ceramic fuse that was working fine - not the pyro fuse with the onboard battery that is triggering...
  4. M

    85 Battery Pack Details

    I've seen some data on the various revisions of the 85kwh packs used in the early cars but I can't find it any concise summaries. I know the basic things like the T15 means it was built in 2015 and an R means it was refurbished but I can't seem to find any concise information on what changed...
  5. M

    2014 P85d High Voltage Failure

    Unfortunately, I ended up with a HV battery failure last night – 2014 P85D. There were buckets of errors on the screen mostly related to a dead 12v which I hoped was the issue so I replace it. When the car came back on, the errors persisted. ScanMyTesla shows Cell 46 down over a volt and Cell 47...
  6. M

    Understanding the AP1 Autopilot Penalty Box

    Hello! I purchased a new-to-me 2014 MS P85D from the original owner at the end of February and I love the car with one annoying exception - The Autopilot. It frequently disengages and doesn't respond to any commands. I have paid special attention to what is happening when it shuts down and...